Square Envelopes
Our exclusive square envelopes are 155 x 155mm | 15.5 x 15.5cm | 6.10 x 6.10 inch and can be posted in the UK as a standard letter size.
Our exclusive square envelopes are 155 x 155mm | 15.5 x 15.5cm | 6.10 x 6.10 inch and can be posted in the UK as a standard letter size.